While I was doing some clean-up around the garage, I looked over at my trailer and noticed the blocks had moved! Apparently with the 100 km/h+ (60 mph) winds we've had lately, the trailer has done some rocking and moved slightly... The hitch jack was resting on a 2x4 which had moved to the edge (from center where I left it) on a 6x6 sq are post.. All 4 corner jacks had also shifted slightly (1/4-1/3 way on the blocks) and one was looser than I had left it.. Wound up repositioning some of the blocks and adding another one at the hitch...
Not sure if some in other windy areas have had similar issues, but you may wanna look at your rig and check it out..Pretty sure if the hitch jack would have fallen, bad things would happen...

I'm paranoid about movement. Not sure why. I'm parked on grass (or what's left of it after parking a trailer on it for a few years) on flat land fairly sheltered from wind. I make really sure it's chocked WELL when parked. I don't leave the stabilizers down when it's at the house, so that may be why I watch it. I don't stack a lot of block under the tongue either...if it were to fall, it'd only be an inch until it hit dirt.